Improvement in dust-excluding and car-ventilating windows



- WITNESSES: I

W. J. ORR. Dust-Excluding and Oar-Ventilating Window.

,No'. 214.695. Patented April 22,1879.

I 5 @L'HHWW INVENTOR' ATTORNEYS.-

UNITED STATES PATENT OFFICE.

WILLIAM J. ORR, OF ROCK HILL, SOUTH CAROLINA.

IMPROVEMENT IN DUST-EXCLUDING AND CAR-VENTILATING WINDOWS.

Spec fication forming part of Letters Patent No. 214,695, dated April22, 1879 application filed January 30, 1879.

To all whom it may concern:

Be it known that I, WILLIAM J. ORR, of Rock Hill, in the county of Yorkand State of South Carolina, have invented a new and ImprovedDust-Excluding and Oar-Ventilating Window; and I do hereby declare thatthe following is afull, clear, and exact description of the same.

My invention is intended for ventilating railway-cars and also excludingdust therefrom, Without obstructing the vision.

It consists of a series of vertical parallelpivotedtransparentslats,between which theair passes freely, and when theslats are adjusted at such angle that the exit-openings are toward therear of the train the suction of the atmosphere (when the train is inmotion) has the efl'ect of drawing the air of the car through the spacesbetween the slats.

The operation of the ventilator, therefore, depends upon the vacuumprinciple. Where the slats are thus adjusted theparticles of cinders,dust, &c., which strike againstthem will be thrown off laterally andprevented from entering the car, and at the same time the plates do nothinder the entrance of light, nor prevent the passengers viewing thelandscape or objects along the road.

In the accompanying drawings, forming part of this specification, Figure1 is an innerside view of the ventilator in position in thewindow-opening of a car. Fig. 2 is a horizontal section on line as w ofFig. 1. Fig. 3 is a detail view, showing a detached fragment of a slatand its frame. Figs. 4, 5, 6 represent a modified construction. Fig. 4:is a cross-section of the ventilator when the slats are held in framesor bars constructed as shown in Fig. 5. Fig. 5 is a perspective view ofone of the slats and frames detached. Fig. 6 is a detail sectional viewof the spring-pivot.

A indicates a rectangular frame, and B transparent slats pivotedtherein, which are the chief components of my invention. The said frameis designed to be attached to a car in any suitable manner, eitheroutside of or within the usual window-openings, as may be preferred.

The slats B are oblong rectangular glass plates, which, as shown inFigs. 1, 2, 3, are held in grooved wooden frames 0, whose end portions,a, are pivoted at the middle of their length in the top and bottom barsof frame A. One side bar of said frames (1 is absent, and the plates Bare held in the frames C by means of large-headed screws D, which enterthe ends of bars a. a. The said frames 0 are connected by anadjusting-bar, E.

In Figs. 4, 5, 6 the construction is the same as shown in Figs. 1,2,3,and above described, except that the slats B are held by springpressurein end bars, a a, and no side bar is employed to connect the latter.

A spring, 0, is applied to each of the upper pivots, d, of said slats,so as to press the pivot and its attached bar a downward. To insert orremove a slat, B, the upper bar, a, is pressed upward. This constructionrenders it easy to replace any slat which has been broken.

When the slats are set inclined to the rear and the train is moving, thepassage of the outer air by the sides of the car will create a vacuum,which will be supplied by the air from within the car, thus effectingthe ventilation of the latter. At the same time such position .of theslats will enable them to ward off any cinders or particles of dustwhich may float in .or be carried along with the air, since it theystrike on a slat they will be diverted laterally, and thus be preventedentering the car. The slats do not materially hinder the vision, andhence they have a threefold function.

I am aware that a car-ventilator composed of pivoted wooden slats hasbeen heretofore employed.

What I claim is- 1. The car-window ventilator and dust-excluder formedof the transparent plates B, the pivoted wooden frames, in the groovesof which said plates are held, and from which they are made detachable,as specified, and

the bar E, attached to said wooden frames, all

as shown and described.

2. The combination of the spring-pivot with thegrooved bars andremovable plates B, all as shown and described, for the purposespecified.

WILLIAM J OAB ORR. Witnesses:

D. HUToHIsoN, JNo. R. LONDON.

